US2147045A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Percussion tool
Assignee: Individual
•
Filing: 1935-12-30
•
Granted: 1939-02-14
•
Expires: 1955-12-30
Abstract
No abstract record available.
Inventors
- 👤 Lembke Halford
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:35
CPC Classifications
E; E21; E21B; E21B6/00; E21B6/06; B; B25; B25D; B25D11/00; B25D11/06; B25D11/10; B25D11/102; B25D11/104; B25D16/00; B25D2211/00; B25D2211/06; B25D2211/062; B25D2211/064; B25D2211/065
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1942-02-13 | 1942-08-15 | 1943-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-02-13 | 1946-08-15 | 1947-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-02-13 | 1950-08-15 | 1951-02-14 | $7700.00 | Window Closed / Lapsed |